Inclusive gamma K0(s) lambda0 and anti-lambda0 production by 205-GeV/c pion proton interactions

Neutral decays and {gamma} conversions have been analyzed in an exposure of the NAL 30 hydrogen bubble chamber to 205 GeV/c pions. This paper presents preliminary results on inclusive cross sections for the production of {Upsilon}'s, K{sub s}{sup 0}'s, {Lambda}{sup 0}'s and {bar {Lambda}}{sup 0}'s by 205 GeV/c {pi}{sup -}p interactions. The experiment was done in the NAL 30 hydrogen bubble chamber. Six hundred and sixty-four neutral decays (or conversions) found in a scan of 3058 {pi}{sup -}p interactions were measured. During measurement, three percent of these events were rejected as not pointing to the primary vertex. Another 29% were discarded by a fiducial volume cut on the neutral vertex.